click below
click below
Normal Size Small Size show me how
Ch. 10 control scatt
| Question | Answer |
|---|---|
| Which would produce the most scattered radiation | A patient with a large abdomen |
| What part of the collimator absorbs the edges of the x-ray beam | The lead shutter |
| Which one of these types of filters is some ties shaped like a wedge | Compensatory filtration |
| A decrease in the collimation field size as what effect on contrast | increase it |
| An increase in filtration has what effect on density | Decrease it |
| Which one of these can be used during radiography of a body part where there will be a lot of unabsorbed primary radiation on the film | Lead blocker |
| Which would produce the most scattered radiation | A large area of radiation |
| The main purpose of filtration is to | Decrease the patient's radiation dose |
| Adding more filtration would have what effect on the average energy of the photons in the x-ray beam | Would increase the average energy |
| Compression to reduce the production of scattered radiation can be used best on which one of these exams | Abdomen |
| Which one of these would be best method for the radiographer to use to control scattered radiation | Reduce the area of radiation |
| Which one of these act like a filter | The back of the cassette |
| The purpose of compensatory filter is to | Make the density |
| Decrease in the area of radiation at the patient's body has body has what effect on density | Decrease it |
| The trough compensatory filter is used most often on | Chests |
| Which one of these types of filtration is removable | Compensatory filtration |
| If an AP thoracic spine is performed with a wedge compensatory filter, the thick end of the filter should be placed over the | Superior end of the spine |
| The glass envelopes of the X-ray tube provides which type of filtration | Inherent |
| The air-gap technique uses | A large SID and large OID |
| Which one of these types of filtration is a result of the design of the x-ray tube | Inherent filtration |
| An increase in filtration has what effect on contrast | Decrease it |
| Which would best protect the patient's body from excess radiation | A small area of radiation |
| Filtration absorbs more | Low energy photons |